14 bit 125MSPS Dual Low Power ADC - ADS4245

ADS4245 (ACTIVE)

14 bit 125MSPS Dual Low Power ADC

Description

The ADS424x and ADS422x family of devices are low-speed variants of the ADS42xx ultralow-power family of dual-channel, 14-bit/12-bit analog-to-digital converters (ADCs). Innovative design techniques are used to achieve high-dynamic performance, while consuming extremely low power with 1.8-V supply. This topology makes the ADS424x/422x well-suited for multi-carrier, wide-bandwidth communications applications.

The ADS424x/422x have gain options that can be used to improve SFDR performance at lower full-scale input ranges. These devices include a dc offset correction loop that can be used to cancel the ADC offset. Both DDR (double data rate) LVDS and parallel CMOS digital output interfaces are available in a compact VQFN-64 package.

The devices include internal references while the traditional reference pins and associated decoupling capacitors have been eliminated. All devices are specified over the industrial temperature range (–40°C to 85°C).

Features

  • Ultralow Power With Single 1.8-V Supply, CMOS
    Output:
    • 183 mW Total Power at 65 MSPS
    • 277 mW Total Power at 125 MSPS
    • 332 mW Total Power at 160 MSPS
  • High Dynamic Performance:
    • 88-dBc SFDR at 170 MHz
    • 71.4-dBFS SNR at 170 MHz
  • Crosstalk: > 90 dB at 185 MHz
  • Programmable Gain up to 6 dB for SNR/SFDR
    Trade-off
  • DC Offset Correction
  • Output Interface Options:
    • 1.8-V parallel CMOS Interface
    • Double Data Rate (DDR) LVDS With
      Programmable swing:
      • Standard Swing: 350 mV
      • Low Swing: 200 mV
  • Supports Low Input Clock Amplitude Down to
    200 mVPP
  • Package: VQFN-64 (9.00 mm × 9.00 mm)

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Parametrics Compare all products in High Speed ADC (>10MSPS)

 
Resolution (Bits)
Sample Rate (max) (SPS)
# Input Channels
SNR (dB)
ENOB (Bits)
SFDR (dB)
Power Consumption (Typ) (mW)
Input Range
Interface
Operating Temperature Range (C)
Analog Input BW (MHz)
Package Group
Estimated Package Size (WxL) (mm2)
Rating
SINAD (dB)
Architecture
DNL (Max) (+/-LSB)
INL (Max) (+/-LSB)
Reference Mode
Power Down
ADS4245 ADS4222 ADS4225 ADS4226 ADS4229 ADS4242 ADS4246 ADS4249
14     12     12     12     12     14     14     14    
125MSPS     65MSPS     125MSPS     160MSPS     250MSPS     65MSPS     160MSPS     250MSPS    
2     2     2     2     2     2     2     2    
73.4     70.9     70.8     70.5     70.5     73.6     72.8     72.8    
11.9     11.5     11.5     11.4     11.3     11.9     11.8     11.7    
89     91     89     87     80     92     87     80    
277     183     277     332     470     183     332     470    
2V (p-p)     2V (p-p)     2V (p-p)     2V (p-p)     2V (p-p)     2V (p-p)     2V (p-p)     2V (p-p)    
Parallel CMOS
Parallel LVDS    
Parallel CMOS
Parallel LVDS    
Parallel CMOS
Parallel LVDS    
Parallel CMOS
Parallel LVDS    
Parallel CMOS
Parallel LVDS    
Parallel CMOS
Parallel LVDS    
Parallel CMOS
Parallel LVDS    
Parallel CMOS
Parallel LVDS    
-40 to 85     -40 to 85     -40 to 85     -40 to 85     -40 to 85     -40 to 85     -40 to 85     -40 to 85    
600     600     600     600     600     600     600     600    
VQFN     VQFN     VQFN     VQFN     VQFN     VQFN     VQFN     VQFN    
64VQFN: 81 mm2: 9 x 9     64VQFN: 81 mm2: 9 x 9     64VQFN: 81 mm2: 9 x 9     64VQFN: 81 mm2: 9 x 9     64VQFN: 81 mm2: 9 x 9     64VQFN: 81 mm2: 9 x 9     64VQFN: 81 mm2: 9 x 9     64VQFN: 81 mm2: 9 x 9    
Catalog     Catalog     Catalog     Catalog     Catalog     Catalog     Catalog     Catalog    
73.2     70.8     70.7     70.4     70     73.5     72.6     72    
Pipeline     Pipeline     Pipeline     Pipeline     Pipeline     Pipeline     Pipeline     Pipeline    
1.7     1.5     1.5     1.5     1.5     1.7     1.7     1.7    
5     3.5     3.5     3.5     3.5     5     5     5    
Int     Int     Int     Int     Int     Int     Int     Int    
               

Other qualified versions of ADS4245

Version Part Number Definition
Enhanced Product ADS4245-EP Supports Defense, Aerospace and Medical Applications

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